Noritz tankless water heaters are efficient, durable, and great long-term values.
Picture this: It’s a busy morning, two showers are running, the dishwasher kicks on, and your old tank goes cold—again. That’s why I spent weeks digging into noritz tankless water heater reviews, testing flow claims, and comparing features that matter in real homes. If you want endless hot water, lower bills, and a space-saving upgrade, Noritz deserves a hard look. Their lineup ranges from compact outdoor units to powerful, app-ready models. I’ll help you match the right one to your home so you avoid buyer’s remorse and enjoy steady hot water for years.
Noritz EZ Series Pro 11.1 GPM (NG)
This EZ Series Pro is a heavy hitter. With up to 11.1 GPM and 199,900 BTU, it can handle multiple showers and a washer at once. It is designed for indoor or outdoor installs, so placement is flexible. Bluetooth connectivity adds easy control and quick checks from your phone.
The heat output is strong, yet the unit runs quiet. It sips power at idle and can trim energy use compared to big storage tanks. Noritz builds for longevity, and it shows in the sturdy chassis and clean piping layout. It is also service-friendly, which helps keep long-term costs in check.
Pros:
- High 11.1 GPM flow supports multiple showers and appliances
- Indoor or outdoor installation flexibility
- Bluetooth connectivity for quick settings and diagnostics
- 199,900 BTU capacity handles cold inlet temps
- Service-friendly design and strong parts support
- Typically qualifies for long heat exchanger warranties when pro-installed
Cons:
- Premium price compared to smaller units
- May need a larger gas line to reach full output
- Smart features rely on the app and your phone’s range
My Recommendation
If you run two to three bathrooms and hate cold surprises, this is the one to beat. It shines in larger homes or busy households that stack hot water tasks. In many noritz tankless water heater reviews, buyers call out its steady temps and quiet run. If you want a future-forward unit that puts control on your phone and shrugs at heavy demand, this EZ Pro fits the bill.
| Best for | Why |
|---|---|
| Large families with 2–3 baths | 11.1 GPM supports showers and laundry at the same time |
| Homes in colder climates | 199,900 BTU output handles low inlet water temps |
| Tech-savvy homeowners | Bluetooth control makes monitoring and tweaks easy |
Noritz NR50OD Outdoor 5.0 GPM (NG)
The NR50ODNG is a compact outdoor unit made for small homes, ADUs, and cabins. With 5.0 GPM and a max 120,000 BTU, it fits light to moderate use. It installs outside, so you skip indoor venting. That keeps costs down and saves space indoors.
The design is simple and tough. It is a non-condensing unit, so it runs a bit warmer at the vent, but that is fine outdoors. Freeze protection is built in when the unit has power, yet extreme cold needs extra care. For fair and mild climates, the value is hard to ignore.
Pros:
- Budget-friendly entry into tankless hot water
- Outdoor install means no indoor venting parts
- Compact size for tight exterior walls
- Good match for 1–1.5 bath homes
- Stable performance for showers and a sink simultaneously
- Straightforward controls and reliable ignition
Cons:
- 5.0 GPM can be limiting for larger families
- Outdoor-only; not suitable for indoor spaces
- Extra freeze protection may be needed in very cold areas
My Recommendation
Choose the NR50OD if you want simple, solid, and outdoor-only. It fits small homes, rental units, and backyard suites with modest needs. In many noritz tankless water heater reviews, users love the easy install and clean look on an exterior wall. If you run one shower and the kitchen sink, it delivers reliable hot water without drama.
| Best for | Why |
|---|---|
| Small homes or ADUs | 5.0 GPM covers one shower plus a sink |
| Budget-focused buyers | Outdoor install cuts venting costs and saves space |
| Mild climates | Built-in freeze protection helps, but not for deep freezes |
Noritz NR66OD Outdoor 6.6 GPM (NG)
The NR66ODNG steps up flow to 6.6 GPM with a 140,000 BTU burner. That extra muscle helps with two showers in warmer climates. Like the NR50, it mounts outdoors to avoid vent kits and save square footage. The design is rugged and proven for steady service.
Performance is smooth, and the ignition ramps quickly. It is a non-condensing outdoor unit, so it keeps things simple. In moderate climates, it can run two baths with light overlap. For the price, it hits a sweet spot for small to mid-sized families.
Pros:
- 6.6 GPM supports two showers in warmer regions
- Outdoor install avoids indoor venting parts
- Solid value for small to medium homes
- Reliable performance and fast ignition
- Compact design looks clean on exterior walls
- Good balance between price and output
Cons:
- Not ideal for very cold inlet temperatures
- Outdoor-only mounting
- May still need gas line upgrades for full output
My Recommendation
If the NR50 feels small, the NR66OD is the natural upgrade. It is better for two-bath homes or a family that runs back-to-back showers. In noritz tankless water heater reviews, owners praise the strong flow and easy upkeep. Choose it when you want outdoor simplicity with a bit more headroom.
| Best for | Why |
|---|---|
| Two-bath homes | 6.6 GPM supports dual showers in warm to mild climates |
| Exterior installs | No indoor venting keeps costs and clutter low |
| Value seekers | Great price-to-performance for families |
Noritz NRC66DV Indoor Condensing 6.6 GPM
The NRC66DVNG is an indoor, direct-vent, condensing model. That means higher efficiency and cooler exhaust. Many installs can use PVC/CPVC venting, which can cut costs. With 6.6 GPM, it is tuned for one to two baths, depending on climate and use.
Condensing units recover more heat, so they waste less energy. You get steady temps, quick ignition, and a compact indoor footprint. The fan is quiet, and the build feels robust. For people who want efficiency and an indoor install, it hits the mark.
Pros:
- Condensing design for higher efficiency and lower fuel use
- Direct venting pulls air from outside for safe indoor operation
- Often allows PVC/CPVC venting to lower install cost
- 6.6 GPM supports steady hot water for smaller homes
- Quiet and compact for utility rooms or closets
- Strong warranty coverage when installed by a pro
Cons:
- 6.6 GPM may not handle heavy, simultaneous use
- Condensate drain required; plan the routing
- Professional install is recommended to meet vent code
My Recommendation
Pick the NRC66DV if you want an efficient, indoor tankless that saves gas. It is best for smaller homes, townhomes, or condos that want direct vent safety. Many noritz tankless water heater reviews call out the quiet run and lean fuel use. If you want lower bills and simple indoor service, this model delivers.
| Best for | Why |
|---|---|
| Efficiency-minded buyers | Condensing heat recovery reduces waste and fuel use |
| Indoor installations | Direct vent design keeps air safe and code-compliant |
| Small homes or condos | 6.6 GPM suits 1–2 baths with smart scheduling |
Noritz RC-7651M Remote Controller
The RC-7651M is a wired remote that brings control inside. You can set precise outlet temperatures without going to the unit. It also shows error codes for faster troubleshooting. For daily use, it adds comfort and convenience.
Mount it in a dry, easy-to-reach spot. The display is clear and simple to navigate. It helps you fine-tune temps for kids or seniors. If your heater is in a garage or outside, this is a smart add-on.
Pros:
- Easy, precise temperature control from inside the home
- Visible error codes aid fast service or DIY checks
- Solid, dependable wired connection
- Compact and clean wall presence
- Useful for families who adjust temps often
Cons:
- Requires running a control cable to the heater
- Not wireless; placement depends on wiring path
- Added cost on top of the heater
My Recommendation
I suggest the RC-7651M for anyone with a hard-to-reach heater. It adds comfort and reduces guesswork. In many noritz tankless water heater reviews, owners like the quick error readouts and exact temp control. It is a small upgrade that feels big in daily life.
| Best for | Why |
|---|---|
| Heaters in garages or outdoors | Control temps from a convenient indoor spot |
| Families with kids or seniors | Fine-tuned temperatures improve comfort and safety |
| DIY troubleshooters | Error codes speed up fixes and service calls |
FAQs Of noritz tankless water heater reviews
How long do Noritz tankless water heaters last?
With proper install and yearly maintenance, 15–20 years is common. Many models include long heat exchanger warranties when installed by a pro.
What size Noritz tankless do I need?
Match GPM to your peak use and climate. Small homes may need 5–6.6 GPM. Large homes or cold regions may need 9–11+ GPM.
Do Noritz tankless units need maintenance?
Yes. Flush with a descaling solution about once a year, or more often with hard water. Clean inlet screens and check venting too.
Can a Noritz run two showers at once?
Yes, if you choose enough GPM. The NR66 or EZ Series Pro handle overlapping showers better, especially in warmer climates.
Is outdoor installation safe in winter?
Outdoor units have freeze protection when powered. In very cold areas, add pipe insulation, freeze kits, or consider an indoor model.
Final Verdict: Which Should You Buy?
For big families or cold climates, the EZ Series Pro 11.1 GPM is my top pick. For small homes on a budget, the NR50OD is great value; the NR66OD adds headroom. Want indoor efficiency? Choose the NRC66DV.
Across noritz tankless water heater reviews, reliability and steady temps stand out. Pick your flow rate by your peak use and climate, and you will love the upgrade.
